I would recommend doing what the owner’s manual says with one exception.
If you have an automatic transmission, ideally you would be doing your second transmission fluid change now. If it has not been changed, I would do it now. This likely is not listed in your owner’s manual. But do it anyway.
Don’t fall into the theory that changing fluid causes failure. While it is true that many transmission fail shortly after having their transmission fluid changed, the real reason for the failure is do to a delayed change and the only reason it was changed is because it was starting to exhibit problems and someone who should have already changed it many miles ago, was hopping that a change now would fix what they were fearing. It is often a case of closing the barn doors after the horses are out.